OpenVPN
mss.h
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1/*
2 * OpenVPN -- An application to securely tunnel IP networks
3 * over a single TCP/UDP port, with support for SSL/TLS-based
4 * session authentication and key exchange,
5 * packet encryption, packet authentication, and
6 * packet compression.
7 *
8 * Copyright (C) 2002-2024 OpenVPN Inc <sales@openvpn.net>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2
12 * as published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 */
23
24#ifndef MSS_H
25#define MSS_H
26
27#include "proto.h"
28#include "error.h"
29#include "mtu.h"
30#include "ssl_common.h"
31
32void mss_fixup_ipv4(struct buffer *buf, uint16_t maxmss);
33
34void mss_fixup_ipv6(struct buffer *buf, uint16_t maxmss);
35
36void mss_fixup_dowork(struct buffer *buf, uint16_t maxmss);
37
39void frame_calculate_dynamic(struct frame *frame, struct key_type *kt,
40 const struct options *options,
41 struct link_socket_info *lsi);
42
48void frame_adjust_path_mtu(struct context *c);
49
50#endif /* ifndef MSS_H */
void mss_fixup_dowork(struct buffer *buf, uint16_t maxmss)
Definition mss.c:144
void frame_calculate_dynamic(struct frame *frame, struct key_type *kt, const struct options *options, struct link_socket_info *lsi)
Set the –mssfix option.
Definition mss.c:335
void mss_fixup_ipv6(struct buffer *buf, uint16_t maxmss)
Definition mss.c:87
void mss_fixup_ipv4(struct buffer *buf, uint16_t maxmss)
Definition mss.c:47
void frame_adjust_path_mtu(struct context *c)
Checks and adjusts the fragment and mssfix value according to the discovered path mtu value.
Definition mss.c:355
Control Channel Common Data Structures.
Wrapper structure for dynamically allocated memory.
Definition buffer.h:61
Contains all state information for one tunnel.
Definition openvpn.h:474
Packet geometry parameters.
Definition mtu.h:98